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Exercise logic.propositional.dnf.unicode
Description
Proposition to DNF (unicode support)
Derivation
Final term is not finished
¬(¬¬q → p) ↔ (T ∧ (¬¬(r ↔ s) ∨ ¬s))
⇒
logic.propositional.notnot
¬(q → p) ↔ (T ∧ (¬¬(r ↔ s) ∨ ¬s))